Researchers have developed a new imaging agent that could help guide and assess treatments for people with various neurological diseases, including Alzheimer's, Parkinson's and Multiple Sclerosis (MS).

With rapidly rising numbers of people suffering from Alzheimer’s and other forms of dementia, the disease is taking a growing emotional and financial toll as people live longer, Gates told Reuters in an interview.

There were also some signs suggesting improvements in participants` conditions.Principal investigator Sharon Sha noted that the finding of safety wasn`t surprising, given that blood-plasma infusions have long been in widespread use for other indications and are considered extremely safe.

In a new test, a research team has found that combining the effects of over two dozen genetic variants help in predicting which cognitively normal older adults will go on to develop Alzheimer's dementia.